diff --git a/test/test_helper.rb b/test/test_helper.rb
index b6847a5..91195d8 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -10,7 +10,8 @@
 require "mocha/minitest"
 require 'minitest-ci' if ENV.fetch('CI') { false }
 require 'ostruct'
-require 'active_support/core_ext/string'
+require 'active_support'
+require 'active_support/core_ext'
 
 VertexClient.configuration # make sure the client is configured